[Federal Register: October 30, 2003 (Volume 68, Number 210)]
[Proposed Rules]
[Page 61766-61768]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr30oc03-21]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 2003-CE-38-AD]
RIN 2120-AA64
Airworthiness Directives; Pacific Aerospace Corporation, Ltd.
Models FU24-954 and FU24A-954 Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for all Pacific Aerospace Corporation, Ltd. Models FU24-954 and FU24A-
954 airplanes. This proposed AD would require you to perform repetitive
detailed visual inspections of the forward vertical fin base for
cracks. If any cracks or discrepancies are found, you must repair the
structure before further flight and notify the FAA. This proposed AD is
the result of mandatory continuing airworthiness information (MCAI)
issued by the airworthiness authority for New Zealand. We are issuing
this proposed AD to detect and correct cracks in the vertical fin base,
which could result in loss of the fin and loss of aircraft control.
DATES: We must receive any comments on this proposed AD by December 8,
2003.
ADDRESSES: Use one of the following to submit comments on this proposed
AD:
[sbull] By mail: FAA, Central Region, Office of the Regional
Counsel, Attention: Rules Docket No. 2003-CE-38-AD, 901 Locust, Room
506, Kansas City, Missouri 64106.
[sbull] By fax: (816) 329-3771. [sbull] By e-mail: 9-ACE-7-Docket@faa.gov. Comments sent
electronically must contain ``Docket No. 2003-CE-38-AD'' in the subject
line. If you send comments electronically as attached electronic files,
the files must be formatted in Microsoft Word 97 for Windows or ASCII.
You may view the AD docket at FAA, Central Region, Office of the
Regional Counsel, Attention: Rules Docket No. 2003-CE-38-AD, 901
Locust, Room 506, Kansas City, Missouri 64106. Office hours are 8 a.m.
to 4 p.m., Monday through Friday, except Federal holidays.
FOR FURTHER INFORMATION CONTACT: Karl Schletzbaum, Aerospace Engineer,
Small Airplane Directorate, 901 Locust, Room 302, Kansas City, MO
64106; telephone: 816-329-4146; facsimile: 816-329-4090.
SUPPLEMENTARY INFORMATION:
Comments Invited
How Do I Comment on This Proposed AD?
We invite you to submit any written relevant data, views, or
arguments regarding this proposal. Send your comments to an address
listed under ADDRESSES. Include ``AD Docket No. 2003-CE-38-AD'' in the
subject line of your comments. If you want us to acknowledge receipt of
your mailed comments, send us a self-addressed, stamped postcard with
the docket number written on it. We will date-stamp your postcard and
mail it back to you.
Are There Any Specific Portions of This Proposed AD I Should Pay
Attention to?
We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. If you
contact us through a nonwritten communication and that contact relates
to a substantive part of this proposed AD, we will summarize the
contact and place the summary in the docket. We will consider all
comments received by the closing date and may amend this proposed AD in
light of those comments and contacts.
Discussion
What Events Have Caused This Proposed AD?
The CAA, which is the airworthiness authority for New Zealand,
notified the FAA of an unsafe condition that may exist on all Pacific
Aerospace Corporation, Ltd. Models FU24-954 and FU24A-954 airplanes.
The CAA reports a recent fatal accident where the aircraft's fin
separated in flight. Initial investigation of this accident indicates
that the forward fin structure failed from fatigue cracks that were
concealed beneath the rubber abrasion protection fitted to the fin.
What Are the Consequences if the Condition Is Not Corrected?
Failure to detect cracks in the vertical fin base could result in
loss of the fin and loss of aircraft control.
Is There Service Information That Applies to This Subject?
No.
What Action Did the CAA Take?
The CAA issued New Zealand AD Number DCA/FU24/173, dated 23 April
2002, in order to ensure the continued airworthiness of these airplanes
in New Zealand.
Was This in Accordance With the Bilateral Airworthiness Agreement?
These Pacific Aerospace Corporation, Ltd. Models FU24-954 and
FU24A-954 airplanes are manufactured in New Zealand and are type-
certificated for operation in the United States under the provisions of
section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and
the applicable bilateral airworthiness agreement.
Per this bilateral airworthiness agreement, the CAA has kept us
[[Page 61767]]
informed of the situation described above.
FAA's Determination and Requirements of This Proposed AD
What Has FAA Decided?
We have examined the CAA's findings, reviewed all available
information, and determined that AD action is necessary for products of
this type design that are certificated for operation in the United
States.
Since the unsafe condition described previously is likely to exist
or develop on other Pacific Aerospace Corporation, Ltd. Models FU24-954
and FU24A-954 airplanes of the same type design that are registered in
the United States, we are proposing AD action to detect cracks in the
vertical fin base, which could result in loss of the fin and loss of
aircraft control.
What Would This Proposed AD Require?
This proposed AD would require you to perform repetitive detailed
visual inspections of the forward vertical fin base for cracks. If any
cracks or discrepancies are found, you must repair the structure before
further flight and notify the FAA.
How Does the Revision to 14 CFR Part 39 Affect This Proposed AD?
On July 10, 2002, we published a new version of 14 CFR part 39 (67
FR 47997, July 22, 2002), which governs FAA's AD system. This
regulation now includes material that relates to altered products,
special flight permits, and alternative methods of compliance. This
material previously was included in each individual AD. Since this
material is included in 14 CFR part 39, we will not include it in
future AD actions.
Costs of Compliance
How Many Airplanes Would This Proposed AD Impact?
We estimate that this proposed AD affects 2 airplanes in the U.S.
registry.
What Would Be the Cost Impact of This Proposed AD on Owners/Operators
of the Affected Airplanes?
We estimate the following costs to accomplish this proposed
inspection:
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Total cost on
Labor cost Parts cost Total cost per airplane U.S. operators
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8 work hours est. $60 per hour = $480... No parts needed for $480 per airplane......... $960
inspection.
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The FAA has no method of determining the number of repairs each
owner/operator would incur over the life of each of the affected
airplanes based on the results of the proposed inspections. We have no
way of determining the number of airplanes that may need such repair.
The extent of damage may vary on each airplane.
Regulatory Findings
Would This Proposed AD Impact Various Entities?
We have determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would not
have a substantial direct effect on the States, on the relationship
between the national Government and the States, or on the distribution
of power and responsibilities among the various levels of government.
Would This Proposed AD Involve a Significant Rule or Regulatory Action?
For the reasons discussed above, I certify that this proposed AD:
1. Is not a ``significant regulatory action'' under Executive Order
12866;
2. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979); and
3. Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
We prepared a summary of the costs to comply with this proposed AD
and placed it in the AD Docket. You may get a copy of this summary by
sending a request to us at the address listed under ADDRESSES. Include
``AD Docket No. 2003-CE-38-AD'' in your request.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the Federal Aviation Administration proposes to amend 14
CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
2. The FAA amends Sec. 39.13 by adding the following new
airworthiness directive (AD):
Pacific Aerospace Corporation, Ltd.: Docket No. 2003-CE-38-AD.
When Is the Last Date I Can Submit Comments on This Proposed AD?
(a) We must receive comments on this proposed airworthiness
directive (AD) by December 8, 2003.
What Other ADs Are Affected by This Action?
(b) None.
What Airplanes Are Affected by This AD?
(c) This AD affects the following airplane models and serial
numbers that are certificated in any category: Pacific Aerospace
Corporation, Ltd. Models FU24-954 and FU24A-954 airplanes, all
serial numbers, that are certificated in any category.
What Is the Unsafe Condition Presented in This AD?
(d) This AD is the result of a recent fatal accident where the
aircraft's fin separated in flight. The actions specified in this AD
are intended to detect and correct cracks in the vertical fin base,
which could result in loss of the fin or loss of control of the
aircraft.
What Must I Do To Address This Problem?
(e) To address this problem, you must accomplish the following:
[[Page 61768]]
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Actions Compliance Procedures
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(1) Perform visual inspection of Initially inspect Inspect from the
the forward area at the base of within the next bottom of the fin
the fin for cracks. 50 hours time-in- up to the first
service (TIS) external strap,
after the paying particular
effective date of attention to the
this AD. skin in the area
Repetitively of the rivets
inspect every 100 that join the fin
hours TIS skin to bulkhead,
thereafter. part number (P/N)
242305, and aft
to the first
vertical lap
joint. To do this
inspection,
remove any rubber
abrasion
protection that
is fitted in this
area, including
any sealant. You
must also remove
the fin leading
edge fairing, P/N
242321.
(2) Repair any cracks that are Prior to further Obtain FAA-
found during the inspection. flight after approved repair
doing any scheme from
inspection manufacturer and
required in notify FAA at the
paragraph (e)(1) address and phone
of this AD. number in
paragraph (f) of
this AD.
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What About Alternative Methods of Compliance?
(f) You may request a different method of compliance or a
different compliance time for this AD by following the procedures in
14 CFR 39.13. Send your request to the Manager, FAA, Small Airplane
Directorate. For information on any already approved alternative
methods of compliance, contact Karl Schletzbaum, Aerospace Engineer,
Small Airplane Directorate, 901 Locust, Room 301, Kansas City, MO
64106; telephone: 816-329-4146; facsimile: 816-329-4090.
Is There Other Information That Relates to This Subject?
(g) CAA airworthiness directive DCA/FU24/173, dated April 23,
2002, also addresses the subject of this AD.
Issued in Kansas City, Missouri, on October 22, 2003.
Michael Gallagher,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 03-27212 Filed 10-29-03; 8:45 am]
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